The present invention discloses Aa vehicle oil-way catalytic fuel economizer which includes a catalyzing device, a heating box enveloping the catalyzing device, electric heating temperature controlling parts, return oil amount regulating parts and a return pipeline for economizing fuel oil. A second chip 13 having a larger size than that of the first chip 12 is mounted on the rear surface of the first chip 12. A plurality of data volumes includes local lock caches which contain information about locks. Also described are a position finding device for radio-based localization, having such an apparatus for calibrating, a method of calibrating a position finding device based on radio-based localization, and a computer program for performing the method are described. The restraints, and consequently the tissue surfaces, are then drawn together. 16\u03bb of a resonant frequency of the directional antenna.